/*
 * Copyright (C) 2006-2012 TongYan Corporation
 * All rights reserved.
 *
 * @brief info:
 *
 * @author: 王哲成 - wangzhecheng@yeah.net
 * @date: 2021.05.25
 * @last modified: 2021-05-25 15:01
 *
 */

#include <iostream>
int main() {
  std::cout << "hello world!\n";
  return 0;
}
